What size motor is in the Ford Mustang 1970 coup?
The 1970 Ford Mustang coupe came with a wide variety of engine options. There wasn't one single "size". Engines ranged from a small six-cylinder to large V8s. To know the engine size of a *specific* 1970 Mustang coupe, you'd need to check its documentation (like the original build sheet or the vehicle identification number (VIN) decode).